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roboShield Simplified Block Diagram
04/27/2018 at 15:53 • 0 commentsHere is a simplified Block Diagram...
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Cheaper Alternative to the Vstamp
04/18/2018 at 13:16 • 0 commentsThe Vstamp from RCsys.com is a bit pricey... Not bad if you want a nice voice and unlimited vocabulary. I am also laying out a cheaper alternative. It will fit in the same spot as the Vstamp and be called the WAVstamp. It wil lhave an uSD card and a 1.4W amp. This will require a bit more I/O, code space and memory (4 IO for the SD card and Pin 9 PCM for the WAV output). With the WAVstamp, you can put WAV files on the uSD card and play them back using the TMRpcm library through pin 9 that will be wired to the AMP so the audio output is amplified to an 8ohm speaker.
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roboShield Progress
04/16/2018 at 13:13 • 0 commentsSpeech clips are here.
https://www.rcsys.com/Downloads/demo1.wma
March, 2018
My board layout skills are not up to par enough to put a 100 pin QFP and 48 pin TSOP down reliably so I changed things up a bit and will allow the end user to buy the TTS module from www.rcsys.com or just just the servo / motor controls without voice. The current design still has the PC9685 so only 2 I2C pins are needed for all the servo and motor control.
4/3/18 Boards are on order from SeeedStudio.com Getting 10 late April/May. Will have all the surface mount components mounted by Seeed and headers will be kitted.
4/4/18 Just added pictures of Toby and his new arm and head servos. You can see my first prototype roboShield. Servos were driven direct off the Arduino and it had the Vstamp connected. I had noticed timing problems with setting the servo position and then writing with softwareSerial. The servos would jitter so That is why I changed to the servo driver IC on the new design. I will post a video of Toby soon.